earth grip

[Illuminated One]

Hahaha, I can already see another guide.
Earth grip - how to win the game by not researching.
No seriously it is nothing that would unbalance the game even if spammed. Quickness (iirc) or some passive damage coupled with high prot gets an SC through it. Sending in another high hp unit (it doesn't need higher hp than the SC, just high enough, I don't know the formula) to act as decoy.
The main purpose against SC is that it drops defense so you can get some hits with heavy low attack weapons/troops in but you really have to do some awkward tricks for timing (since even assuming that an e2 mage would use it reliably, the fewest "lategame" i.e. mobile and durable mages are e2 only).